diff --git a/cmds/statsd/src/external/StatsPullerManager.cpp b/cmds/statsd/src/external/StatsPullerManager.cpp
index 46c377037542a..8334b6b4db908 100644
--- a/cmds/statsd/src/external/StatsPullerManager.cpp
+++ b/cmds/statsd/src/external/StatsPullerManager.cpp
@@ -315,6 +315,7 @@ void StatsPullerManager::OnAlarmFired(int64_t elapsedTimeNs) {
 }
 
 int StatsPullerManager::ForceClearPullerCache() {
+    std::lock_guard<std::mutex> _l(mLock);
     int totalCleared = 0;
     for (const auto& pulledAtom : kAllPullAtomInfo) {
         totalCleared += pulledAtom.second->ForceClearCache();
@@ -323,6 +324,7 @@ int StatsPullerManager::ForceClearPullerCache() {
 }
 
 int StatsPullerManager::ClearPullerCacheIfNecessary(int64_t timestampNs) {
+    std::lock_guard<std::mutex> _l(mLock);
     int totalCleared = 0;
     for (const auto& pulledAtom : kAllPullAtomInfo) {
         totalCleared += pulledAtom.second->ClearCacheIfNecessary(timestampNs);